The Regional Transportation District (RTD) for Denver metro area has directors that are elected from the different segments of the RTD. 

Here is a map of the districts:

http://www3.rtd-denver.com/elbert/BoardOffice/boardDistrictMap.cfm

The current directors and other information is available at:

http://www.rtd-denver.com/BoardDirectors.shtml

Look to special districts like RTD and more to get involved with and pay attention to.